angular-ng test没有Http的提供者！错误

确切的错误：

Error: No provider for Http!
    at injectionError (http://localhost:9876/base/src/test.ts:1538:86) [angular]
    at noProviderError (http://localhost:9876/base/src/test.ts:1576:12) [angular]
    at ReflectiveInjector_.Array.concat.ReflectiveInjector_._throwOrNull (http://localhost:9876/base/src/test.ts:3077:19) [angular]
    at ReflectiveInjector_.Array.concat.ReflectiveInjector_._getByKeyDefault (http://localhost:9876/base/src/test.ts:3116:25) [angular]
    at ReflectiveInjector_.Array.concat.ReflectiveInjector_._getByKey (http://localhost:9876/base/src/test.ts:3048:25) [angular]
    at ReflectiveInjector_.Array.concat.ReflectiveInjector_.get (http://localhost:9876/base/src/test.ts:2917:21) [angular]
    at DynamicTestModuleInjector.Array.concat.NgModuleInjector.get (http://localhost:9876/base/src/test.ts:3864:52) [angular]

我要测试的组件的@component是：

@Component({
  selector: 'app-game-board',templateUrl: './game-board.component.html',styleUrls: ['./game-board.component.css'],providers: [GameBoardService]
})

我试图在spec.ts类(测试)中导入HTTPModule,但我无法让它工作.这是spec.ts的代码

import { async,ComponentFixture,TestBed } from '@angular/core/testing';
import { BrowserModule } from '@angular/platform-browser';
import { HttpModule } from '@angular/http';
import { GameBoardComponent } from './game-board.component';
import { GameBoardService } from "app/services/gameboardservice";

describe('GameBoardComponent',() => {
  let component: GameBoardComponent;
  let fixture: ComponentFixture<GameBoardComponent>;

  beforeEach(async(() => {
    TestBed.configureTestingModule({
      imports: [HttpModule],//this is where I try to import the HttpModule
      declarations: [ GameBoardComponent ],providers: [GameBoardService]
    })
    .compileComponents();
  }));

  beforeEach(() => {
    fixture = TestBed.createComponent(GameBoardComponent);
    component = fixture.componentInstance;
    fixture.detectChanges();
  });

  it('should create',() => {
    expect(component).toBeTruthy();
  });
});

我也在测试类的提供者中尝试过这个：

providers: [{ provide: Http,useValue: GameBoardService }]